Side draft burner



May 2, 1933. w. B. ENGH fr Al. 1,906,254l

SIDE DRAFT BURNER Filed Feb. 27, 1951 2 shefs-snee'l 1 May 2, 1933; K w. B ENGH ET AL 1,906,254

` vSIDE DRAFT BURNER Filed Feb. 27, 1931 2 Sheets-Sheet 2 Patented May i?, 1933 UNITED STATES PATENT OFFICE WALTER B. ENGH, OF CHICAGO, ILLINOIS, AND CORILAND- W. DAVIS, OF ALEXANDRIA, INDIANA, ASSIGNORS TO THE MANTLE LAMP COMPANY OF AMERICA, OF CHICAGO,

ILLINOIS, A CORPORATION OF ILLINOIS SIDE DRAFT BURNER Application led February 27, 1981.

The invention relates to blue-dame burners of the type, known as side-draft burners, wherein air is laterally admitted to the inside of a circular wick through a passage in the burner instead of through a duct exten ding upward through the reservoir which supplies fuel to said wick, and the object of the invention is to equip that type of burners with means whereby adequate quantities of air will be uniformly supplied to the interior of the flame.

The usual defect of a side-draft burner, is the weakness of the air introduced through the central tube thereof, the air passages leading to that tube being of such character as to produce a resistance which weakens the air introduction, and appreciably reduces the efficiency of the burner.

The new burner, herein described, is so constructed as to overcome this defect. It is provided with diametrically-opposed and relatively large side-draft ports, and with a short vertical vane, centrally disposed within the central air tube thereof, against which the opposite air currents, fiowing through said ports, respectively will impinge before they pass to the upper portion of said central air tube, the object of said vane being to avoid the resistance produced by the direct impingement of the entering air currents upon each other.

Although a blue-dame burner thus equipped with opposite side-draft ports and with a vane disposed therebetween was efcient in that it supplied an adequate volume of air to the interior of the ame, said flame was undesirably affected by external drafts of air. After much experimentation, this scnsitiveness of the burner was overcome by placing a radially-disposed vane directly in front of the approximate center of each side-draft port. These radially-disposed vanes stabilized the operation of the burner, without diminishing the volume of the interiorly supplied air.

Serial No. 518,692.

The invention will best be understood if reference be had to the accompanying drawings, in which- Figure 1 is a vertical sectional View of a known type of burner, equipped with the new devices hereinbefore described;

Figure 2 is a sectional view of said burner taken on the line 2 2 of Figure l.

The burner has outer and inner wick tubes l and 2, a spreader 3 for directing air to the interior of the annular fiame, a cone 4, 5 for directing air to the exterior of that flame, a gallery 6, and a perforated basket 7 to the lower end 8 of which the outer wick tube l is secured.

The outer wick tube l and the inner wick tube 2, respectively are provided on opposite sides with diametrically-disposed openings la, 2a, coinciding with the walls 9 of theports which lead the air into the central air tube 2.

Within the inner air tube 2 is a vane 10 extending upward from the lower end of said air tube to, preferably, a point above the walls 9 of the side air ports. This vane, as already indicated, by facilitating the upward flow of the currents of air entering said air ports, ensures an adequate supply of air to the interior of the burner flame.

Within the basket 7 are vertical vanes 1l that extend to, and divide the openings la of the outer wick tube 1. These vanes, as hereinbefore described, prevent external currents of air from aecting the stability of the burner flame. A lighted burner, equipped with these vanes l1, has been subjected to the blast of a powerful fan without extinguishing the burner flame, or causing the deposition of carbon on the mantle.

These several devices may be disposed at any suitable altitude relative to said inner air tube 2, and saidA inner air tube may be of any desired length, provided it has openings, such as the openings 2a, through which air may pass to the opposite sides of the vane 10.

Having thus described our invention, what we claim is:

1. A. side-draft burner of the blue-flame type, including a side air port, a central air tube into which said air port leads, and a vertical vane disposed outs1de of and extending to said air port, to thereby protect the burner flame from external drafts of air.

2. A side-draft burner of the blue-flame type, including opposed air ports, a central air tube into which said air ports lead, and vertical vanes disposed outslde of and extending to said air ports.

3. A side-draft burner of the blue-flame type, including opposed air port-s, a central air tube into which said air ports lead, a vertical vane in said central air tube against which air entering` through said air ports may impinge, and vertical vanes disposed outside of and extending to said air ports.

4. A side-draft burner of the blueflame type, including a perforated basket, a side air. port,-a central air tube into which said air port leads, and a vertical vane disposed Within said perforated basket and extending to said air port, to thereby protect the burner flame from external drafts of air.

In testimony whereof We alix our signatures.

WALTER B. ENGH. CORTLAND W. DAVIS. 

